Permanent magnet synchronous motor and linear rotor structure thereof

A technology of permanent magnet synchronous motor and rotor structure, which is applied in the direction of synchronous machine, magnetic circuit shape/style/structure, magnetic circuit rotating parts, etc., which can solve the problems of poor workmanship, affecting the strength of the magnetic isolation bridge, and low installation efficiency of permanent magnets, etc. problems, to achieve the best effect of ensuring reliability and electromagnetic performance

Inactive Publication Date: 2012-03-21
CSR ZHUZHOU ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing rotor structure has the following technical problems: the centrifugal force caused by the mass of the permanent magnet and the rotor core itself will act on the magnetic isolation bridge, and the magnetic isolation bridge needs to bear relatively large pressure, which affects the strength of the magnetic isolation bridge , and thus cannot meet the electromagnetic performance requirements of the motor, and the rotor structure of the traditional structure also has problems such as poor manufacturability and low installation

Method used

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  • Permanent magnet synchronous motor and linear rotor structure thereof
  • Permanent magnet synchronous motor and linear rotor structure thereof

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Embodiment Construction

[0020] The core of the present invention is to provide an inline rotor structure of a permanent magnet synchronous motor. The number of permanent magnets in each pole of the rotor structure is at least two, and there are reinforcing ribs between the permanent magnets, so the influence of the centrifugal force of the rotor core and the permanent magnets on the magnetic isolation bridge can be reduced.

[0021] Another core of the present invention is to provide a permanent magnet synchronous motor including the inline rotor structure.

[0022] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a specific embodiment of the inline rotor structure of the permanent magnet synchronous motor provided b...

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Abstract

The invention discloses a linear rotor structure of a permanent magnet synchronous motor, which is provided with a rotor core, wherein each pole of the rotor core is provided with permanent magnets and a magnetism isolating bridge, at least two permanent magnets are arranged in each pole and arranged in a linear shape, mounting holes with the number corresponding to that of the permanent magnets are formed on the rotor core, and a rotor core part between every two mounting holes forms a strengthening rib. A strengthening rib is arranged between the permanent magnets of each pole of the rotor structure, and during the operation, the mass of the rotor core and the centrifugal force produced by the mass of the permanent magnet are born by the strengthening ribs, so that influences caused by the centrifugal force to the intensity of the magnetism isolating bridge can be reduced; and the strengthening ribs have magnetism isolating effects and can ensure the running reliability of the motor.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a permanent magnet synchronous motor and its inline rotor structure. Background technique [0002] With the gradual maturity of the development and control technology of permanent magnet synchronous motors, and the continuous development of permanent magnets in terms of performance and industrialization, there is increasing interest and demand for permanent magnet synchronous motors in various fields, especially permanent magnet synchronous variable frequency speed control motors. bigger. At present, permanent magnet synchronous motors are widely used in various servo motors, wind power generation fields, oil drilling and electric vehicle drive motors, etc. [0003] The permanent magnet synchronous motor includes a stator structure, a rotor structure and a rotating shaft, and the rotating shaft drives the rotor structure to rotate. Each pole of the rotor core is equipped with a ...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K21/00
Inventor 晏才松周黎民张蕾刘方年杨云峰
Owner CSR ZHUZHOU ELECTRIC CO LTD
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